204207129 has 32 divisors (see below), whose sum is σ = 353802240. Its totient is φ = 113971536.

The previous prime is 204207119. The next prime is 204207161. The reversal of 204207129 is 921702402.

204207129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204207129 - 2¹¹ = 204205081 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (204207109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4437 + ... + 20690.

It is an arithmetic number, because the mean of its divisors is an integer number (11056320).

Almost surely, 2^204207129 is an apocalyptic number.

It is an amenable number.

204207129 is a deficient number, since it is larger than the sum of its proper divisors (149595111).

204207129 is a wasteful number, since it uses less digits than its factorization.

204207129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25186 (or 25180 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 204207129 is about 14290.1059828120. The cubic root of 204207129 is about 588.8756995596.

The spelling of 204207129 in words is "two hundred four million, two hundred seven thousand, one hundred twenty-nine".